80 (78) Convex, giving a ratHer hump-backed appearance, with 

 sutural intervals slightly raised; with third or 

 fourth elytral stria converging and merging with 

 second or third stria at about apical third; major 

 striae entire, extending to apex of elytron; antennae 

 with 10 or 11 segments, last 3 somewhat enlarged; apex of 

 fifth abdominal sternite usually somewhat truncate 

 or emarginate; tarsal claws relatively slender; in 



western mountains (Fig. 74) Heterlirmius 81 



Less convex; sutural interval usually not raised; 



elytral striae not ordinarily merging as described 

 above, either being entire or becoming obsolete in 

 posterior portion of elytron; antennae with 11 segments, 

 the last 3 less enlarged; apex of fifth abdominal 

 sternite usually evenly rounded; claws somewhat 



larger and more curved (Fig. 75) .... Optioservus 



[This section is largely based upon Collier (1969).] 82 



Figs 74-75 Dorsal view of adult: 74- Heterlirmius 

 corpulentus; 75- Optioservus ovalis. 



81 (80) Antenna with 11 segments; pronotum black; elytron 

 reddish to black, often reddish or yellowish in 

 basal half shading to brown or black and with a 

 diffuse lighter spot apically; 2-2.5 mm long, 1.1- 

 1.3 mm wi e (Fig. 76): Ueterlivmius koehelei 



Antenna with 10 segments; pronotum black; elytron 

 brown to black, often reddish at base and in a 

 rather faint apical spot; 2.4-2.9 mm long, 1.25- 

 1.45 mm wide (Fig. 74): Heterlimnius corpulentus 



82 (80) Elytra immaculate, with no vittae or spots 

 Elytra with vittae and/or spots 



83 

 86 



43 



